orcus | 1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
02-07-2024 01:42

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General

Target

1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f.exe
Size

907KB
MD5

b2e4362b9f96ec4188f662819fd0ed95
SHA1

f8bfd2340039c904f459136c6b6abc4bcfa68e93
SHA256

1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f
SHA512

0315b4b5fc6351615a20cb80cb61ebd3aaeeac562c89fac53fe44f7d6757eb1a9a04c2bd90a7682ad6105c7c9802efe44aeea22d4522f384c1f886a239463359
SSDEEP

24576:i554MROxnFMptJSvrrcI0AilFEvxHP7ooI:iQMiqTSvrrcI0AilFEvxHP

Score

10^/10

orcus persistence rat spyware stealer

Malware Config

Extracted

Family

orcus

10.9.164.122:9999

Mutex

c3d53f9fe37146cb9de31d6e16e18ac2

Attributes

autostart_method
Registry
enable_keylogger
false
install_path
%programfiles%\Orcus\Orcus.exe
reconnect_delay
10000
registry_keyname
Orcus
taskscheduler_taskname
Orcus
watchdog_path
AppData\OrcusWatchdog.exe

Signatures

Orcus
Orcus is a Remote Access Trojan that is being sold on underground forums.
rat spyware stealer orcus
Orcus main payload 1 IoCs

Processes:

resource yara_rule

C:\Program Files (x86)\Orcus\Orcus.exe family_orcus
Orcurs Rat Executable 2 IoCs

Processes:

resource yara_rule

behavioral2/memory/2148-1-0x0000000000B20000-0x0000000000C08000-memory.dmp orcus
C:\Program Files (x86)\Orcus\Orcus.exe orcus

resource	yara_rule
C:\Program Files (x86)\Orcus\Orcus.exe	family_orcus

resource	yara_rule
behavioral2/memory/2148-1-0x0000000000B20000-0x0000000000C08000-memory.dmp	orcus
C:\Program Files (x86)\Orcus\Orcus.exe	orcus

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation	1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f.exe

Executes dropped EXE 1 IoCs

Processes:

Orcus.exe

pid process

3472 Orcus.exe

pid	process
3472	Orcus.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Orcus.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Orcus = "\"C:\\Program Files (x86)\\Orcus\\Orcus.exe\""	Orcus.exe

Drops file in Program Files directory 3 IoCs

Processes:

1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f.exe

description	ioc	process
File created	C:\Program Files (x86)\Orcus\Orcus.exe	1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f.exe
File opened for modification	C:\Program Files (x86)\Orcus\Orcus.exe	1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f.exe
File created	C:\Program Files (x86)\Orcus\Orcus.exe.config	1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f.exe

description	pid	process	target process
PID 2148 wrote to memory of 3472	2148	1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f.exe	Orcus.exe
PID 2148 wrote to memory of 3472	2148	1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f.exe	Orcus.exe
PID 2148 wrote to memory of 3472	2148	1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f.exe	Orcus.exe

C:\Users\Admin\AppData\Local\Temp\1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f.exe
"C:\Users\Admin\AppData\Local\Temp\1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2148

C:\Program Files (x86)\Orcus\Orcus.exe
"C:\Program Files (x86)\Orcus\Orcus.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
PID:3472

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4156,i,3144109701624127473,12586215149656995128,262144 --variations-seed-version --mojo-platform-channel-handle=1304 /prefetch:8
1⤵
PID:3572

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Program Files (x86)\Orcus\Orcus.exe
Filesize
907KB

MD5
b2e4362b9f96ec4188f662819fd0ed95

SHA1
f8bfd2340039c904f459136c6b6abc4bcfa68e93

SHA256
1806529b170be4bbe19aff809a669b9ee1ca761cbfc82bb113ca591ad0da7e2f

SHA512
0315b4b5fc6351615a20cb80cb61ebd3aaeeac562c89fac53fe44f7d6757eb1a9a04c2bd90a7682ad6105c7c9802efe44aeea22d4522f384c1f886a239463359

Download Submit
C:\Program Files (x86)\Orcus\Orcus.exe.config
Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
memory/2148-4-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/2148-3-0x0000000005430000-0x000000000548C000-memory.dmp

Filesize
368KB

Download
memory/2148-0-0x0000000074DBE000-0x0000000074DBF000-memory.dmp

Filesize
4KB

Download
memory/2148-5-0x0000000005C80000-0x0000000006224000-memory.dmp

Filesize
5.6MB

Download
memory/2148-6-0x00000000055D0000-0x0000000005662000-memory.dmp

Filesize
584KB

Download
memory/2148-7-0x00000000055B0000-0x00000000055C2000-memory.dmp

Filesize
72KB

Download
memory/2148-2-0x0000000002FD0000-0x0000000002FDE000-memory.dmp

Filesize
56KB

Download
memory/2148-1-0x0000000000B20000-0x0000000000C08000-memory.dmp

Filesize
928KB

Download
memory/2148-24-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/3472-23-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/3472-25-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/3472-27-0x0000000005B60000-0x0000000005B78000-memory.dmp

Filesize
96KB

Download
memory/3472-26-0x0000000005AF0000-0x0000000005B3E000-memory.dmp

Filesize
312KB

Download
memory/3472-28-0x0000000005CE0000-0x0000000005CF0000-memory.dmp

Filesize
64KB

Download
memory/3472-29-0x0000000005EE0000-0x0000000005EEA000-memory.dmp

Filesize
40KB

Download
memory/3472-30-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/3472-31-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download